Update uno-check version to 1.27.1

[Arlodotexe]

We're seeing widespread CI failure in the uno-check step.

==workloadRollbackDefinitionJsonOutputEnd==
  × android (Microsoft.NET.Sdk.Android.Manifest-8.0.100 : 34.0.79/8.0.100) not 
installed.
  × ios (Microsoft.NET.Sdk.iOS.Manifest-8.0.100 : 17.2.8022/8.0.100) not 
installed.
  × maccatalyst (Microsoft.NET.Sdk.MacCatalyst.Manifest-8.0.100 : 
17.2.8022/8.0.100) not installed.
  × macos (Microsoft.NET.Sdk.macOS.Manifest-8.0.100 : 14.2.8022/8.0.100) not 
installed.
  × maui (Microsoft.NET.Sdk.Maui.Manifest-8.0.100 : 8.0.6/8.0.100) not 
installed.

This PR attempts to remedy the issue by updating uno-check to the latest version.

Prerequisite PR: CommunityToolkit/Tooling-Windows-Submodule#229

[Arlodotexe]

This PR is no longer needed to unblock our CI (see here) but is still needed to upgrade to net9.0.